Re: [PATCH v7 3.2-rc2 4/30] uprobes: Define hooks for mmap/munmap.

From: Peter Zijlstra
Date: Wed Nov 23 2011 - 13:10:53 EST


On Fri, 2011-11-18 at 16:37 +0530, Srikar Dronamraju wrote:
> + ret = install_breakpoint(vma->vm_mm, uprobe);
> + if (ret == -EEXIST) {
> + atomic_inc(&vma->vm_mm->mm_uprobes_count);
> + ret = 0;
> + }

Aren't you double counting that probe position here? The one that raced
you to inserting it will also have incremented that counter, no?
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